KENTUCKY PLUMBING CODE UPDATED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Q1 Flush Valve
Answer A device located at the bottom of a tank for slushing water closets and similar fixtures.
Q2 Grillage
Answer Means sand, pea, gravel, or limestone rock size #57 and smaller used for bedding for piping
systems.
Q3 Trap Arm
Answer The portion of a fixture drain between a trap and its vent.
Q4 Building Gravity Drainage System
Answer A drainage system that drains by gravity into the building sewer.
Q5 Public sewer
Answer a common sewer directly controlled by public authority to which all abutters have equal rights
of connections.
Q6 Sterilizer Vent
Answer A separate pipe or stack, indirectly connected to the building drainage system at the lower
terminal, which receives the vapors from non-pressure sterilizer, of the exhaust vapors from the
pressure sterilizer, and conducts the vapors directly to the outer air. Sometimes a sterilizer vent
is referred to as vapor, steam, atmospheric, or exhaust vent.
Page 1 of 26
, Q7 Drain
Answer Any pipe that carries waste water or waterborne wastes in a building drainage system.
Q8 Potable Water
Answer Water free from impurities present in amounts sufficient to cause disease or harmful
physiological effects and conforming in its bacteriological and chemical quality to the
requirements of the Division of Water.
Q9 Building Sewer
Answer That part of the drainage system that extends from the end of the building drain and conveys its
discharge to a public sewer, private sewer, individual sewage disposal system, or other point of
disposal.
Q10 Fixture Unit, Drainage (D.F.U)
Answer a measure of the probable discharge into the drainage system by various types of plumbing
fixtures. (DFU is calculated by volume rate of drainage discharge, time of a single drainage
operation, and average time between successive operations).
Q11 Individual Vent
Answer A pipe installed to vent a fixture drain.
Q12 Back Siphonage
Answer the flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into
a water supply pipe due to a negative pressure in a pipe
Q13 DWV
Answer Abbreviation for drain, waste, and vent.
Page 2 of 26
, Q14 Roughing-In
Answer The instillation of all parts of the plumbing system that can be completed prior to the
installation of fixtures. This includes drainage, water supply, vent piping, and the necessary
fixture supports.
Q15 Fire Line
Answer A system of pipes and equipment used exclusively to supply water for extinguishing fires.
Q16 Sterilizer, Pressure (Autoclave)
Answer A fixture under pressure designed to use steam under pressure for sterilizing.
Q17 Backflow
Answer The flow of water or other liquids, mixtures, or substances into the distributing pipes of a
potable supply of water from any source or sources other than its intended source.
Q18 Plumbing System
Answer Appliances and water heaters; the water supply distributing pipes; the fixtures and fixture traps;
the soil, waste, and vent pipes; the house drain and house sewer; the storm water drainage
within a building with their devices, appurtenances and connections all within and adjacent to
the building.
Q19 Floor Drain
Answer A drain placed in the floor of a building for the purposes of receiving sanitary waste water.
Q20 Journeyman Plumber
Answer A person who engages in the construction, instillation, alteration, maintenance, repair,
remodeling, or removal and replacment of plumbing, under the supervision of a Master
Plumber
Page 3 of 26
ANSWERS
Q1 Flush Valve
Answer A device located at the bottom of a tank for slushing water closets and similar fixtures.
Q2 Grillage
Answer Means sand, pea, gravel, or limestone rock size #57 and smaller used for bedding for piping
systems.
Q3 Trap Arm
Answer The portion of a fixture drain between a trap and its vent.
Q4 Building Gravity Drainage System
Answer A drainage system that drains by gravity into the building sewer.
Q5 Public sewer
Answer a common sewer directly controlled by public authority to which all abutters have equal rights
of connections.
Q6 Sterilizer Vent
Answer A separate pipe or stack, indirectly connected to the building drainage system at the lower
terminal, which receives the vapors from non-pressure sterilizer, of the exhaust vapors from the
pressure sterilizer, and conducts the vapors directly to the outer air. Sometimes a sterilizer vent
is referred to as vapor, steam, atmospheric, or exhaust vent.
Page 1 of 26
, Q7 Drain
Answer Any pipe that carries waste water or waterborne wastes in a building drainage system.
Q8 Potable Water
Answer Water free from impurities present in amounts sufficient to cause disease or harmful
physiological effects and conforming in its bacteriological and chemical quality to the
requirements of the Division of Water.
Q9 Building Sewer
Answer That part of the drainage system that extends from the end of the building drain and conveys its
discharge to a public sewer, private sewer, individual sewage disposal system, or other point of
disposal.
Q10 Fixture Unit, Drainage (D.F.U)
Answer a measure of the probable discharge into the drainage system by various types of plumbing
fixtures. (DFU is calculated by volume rate of drainage discharge, time of a single drainage
operation, and average time between successive operations).
Q11 Individual Vent
Answer A pipe installed to vent a fixture drain.
Q12 Back Siphonage
Answer the flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into
a water supply pipe due to a negative pressure in a pipe
Q13 DWV
Answer Abbreviation for drain, waste, and vent.
Page 2 of 26
, Q14 Roughing-In
Answer The instillation of all parts of the plumbing system that can be completed prior to the
installation of fixtures. This includes drainage, water supply, vent piping, and the necessary
fixture supports.
Q15 Fire Line
Answer A system of pipes and equipment used exclusively to supply water for extinguishing fires.
Q16 Sterilizer, Pressure (Autoclave)
Answer A fixture under pressure designed to use steam under pressure for sterilizing.
Q17 Backflow
Answer The flow of water or other liquids, mixtures, or substances into the distributing pipes of a
potable supply of water from any source or sources other than its intended source.
Q18 Plumbing System
Answer Appliances and water heaters; the water supply distributing pipes; the fixtures and fixture traps;
the soil, waste, and vent pipes; the house drain and house sewer; the storm water drainage
within a building with their devices, appurtenances and connections all within and adjacent to
the building.
Q19 Floor Drain
Answer A drain placed in the floor of a building for the purposes of receiving sanitary waste water.
Q20 Journeyman Plumber
Answer A person who engages in the construction, instillation, alteration, maintenance, repair,
remodeling, or removal and replacment of plumbing, under the supervision of a Master
Plumber
Page 3 of 26
